UNIT 3 ENVI STUDIES

What is the literal translation of the term 'biogeochemical cycles'?

• Earth-Life-Chemical

• Earth-Chemical-Life

• Life-Earth-Chemical

• Chemical-Life-Earth

Which of the following is NOT a macronutrient?

• Potassium

• Iron

• Carbon

• Nitrogen

What is the main source of carbon for organisms in the carbon cycle?

• Fossil fuels

• Ocean beds

• Earth's rocks

• CO2 from the atmosphere

Which process in the carbon cycle involves the release of carbon dioxide into the atmosphere?

• Combustion

• Decomposition

• Photosynthesis

• Respiration

What is the main component of the atmosphere that makes up 78% of its volume?

• Nitrogen

• Carbon dioxide

• Methane

• Oxygen

Which activity by humans disrupts the nitrogen cycle by emitting large quantities of nitric oxide?

• Deforestation

• Burning fossil fuels

• Mining phosphate rock

• Using commercial fertilizers

What is the main form of phosphorus in the phosphorus cycle?

• Phosphorus oxide

• Phosphine gas

• Phosphates

• Phosphoric acid

Which process in the phosphorus cycle involves the breakdown of organic matter into inorganic phosphates?

• Assimilation

• Decomposition

• Erosion

• Weathering

What is the primary function of the hydrologic cycle?

• Transporting nutrients

• Generating electricity

• Regulating temperature

• Collecting and distributing water

Which human activity interferes with the hydrologic cycle by withdrawing large quantities of fresh water?

• Construction

• Mining

• Deforestation

• Agriculture